Question: When an electric current flows through a wire, the resistance to flow varies directly as the length and inversly as the cross- sectional area

When an electric current flows through a wire, the resistance to flow

When an electric current flows through a wire, the resistance to flow varies directly as the length and inversly as the cross- sectional area of the wire. If the length of the wire changes by a factor of 3.8, and the diameter of the wire changes by a factor of 0.6, by what factor will the resistance change? Recall that the cross-sectional area of a circle is A = mp2 and that diameter d=2r. Express your answer to three significant digits.

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